1 cowardly

2 weak

1 to have stage fright

1 timid

2 gutless

3 weakling

1 coward

1 shy

2 timid

1 a great hero may appear timid (idiom); the really brave person remains level-headed

1 a great hero may appear timid, the wise may appear stupid (idiom); the general public may not recognize great talent

1 to speak in a frightened voice that lacks courage (idiom)